Marc Marquez's doctor Samuel Antuna has underlined the severity of the reigning MotoGP champion's latest injury, saying he would have to retire from professional tennis if he were world number three Carlos Alcaraz.
After undergoing surgery on his right shoulder on 10 May, Marquez returned in Italy less than three weeks later, stringing together four victories in the following six rounds of the calendar, including three spectacular doubles in Hungary, Germany and, most recently, at Aragon.
